This iron claims to heat up in 15 seconds; it also claims to use some bullshit technology that allows it to "self adjust" temperature according to hair type. Well it got warm but it sure as hell didn't heat up enough to seriously straighten or curl my hair in a mere 15 seconds--in fact, I found that it didn't ever straighten my hair enough to satisfy me.
Dual-Zone Technology: You will have heard of Tri-Zone Technology if you own a ghd Platinum Styler, so think of Dual-Zone Technology as its little sister. Instead of three heated regions, this styler features two, one towards the tip of the styler and another closer to the base. This essentially means the straightener has better control over the way it heats your hair, instead of over-delivering in one area and lacking in another. Think quicker styling and a more uniform look in terms of sleekness and smoothness.
Achieve seductive soft movement: Mist hair with ghd heat protect spray. Section the hair and lightly mist with a curl hold spray to add shine and hold when styling. Place a fine section of hair between the plates of your ghd Gold Styler vertically 1 inch away from the root. Gently close the styler with minimum tension. Turn the styler clockwise by 90 degrees. For a soft curl, pull the styler quickly through the hair away from the head in one continuous smooth movement. An s-shaped vertical curl is created. To complete the style, repeat through all sections. Finally, separate and brush out the curls with a wide-tooth comb.

So the real question isn’t about whether people think that the GHD Classic 1-inch Styler is great. There’s virtually a universal consensus that it is. The question is about the reputation of the seller from which you are contemplating buying the GHD Classic 1-inch Styler. There are actually legitimate sellers who offer significant discounts, but they’re not easy to find.

I gave it three sticks because my hair did eventually get straight and at no point did I feel like it harmed my hair, but it's not even adjustable because again, the company claims that this iron auto-adjusts according to hair "conductivity" or some bullshit like that (this is a laughable claim). It does have auto-shut off but so do a lot of irons (or at least the high end ones). Honestly, I can only conclude that this is another one of those hyped up beauty products aimed at people who think more $$$= better product and performance but a straightener is a straightener so once you get past the $100 price point it all comes down to personal preference and there's really not much more you're gonna get for your money...

For me, the first and still very best of all ceramic stylers [and my dad is a hairdresser too]. It heats up fast, cools down relatively fast, works wonderfully and lasts a long time. In 11 years, I've bought two such stylers. The first one eventually died after 6 years of daily use, rarely skipping a day, while my second one is still going strong. I have no reason to recommend any other styler but this one. My hair is long and very fine.